Remove pointless clause

This condition didn't do anything and was misleading, SEPOLICY variables
are only relevant when selinux is built in the first place

Change-Id: I423cf0e5b04fd9e92f4cc9c33d13d4875c9aafc6
Merge branch 'cm-10.1' of https://github.com/CyanogenMod/android_device_lge_e975 into cm-10.1